HackedCrate

A PvP event built around a timer. A crate appears, someone starts the hack, and then they have to survive until it finishes — and everyone else on the server knows it's happening.

Crates spawn at fixed locations you choose and as a roaming event, and what's inside changes with server population, so a quiet night doesn't hand out the same loot as a full one. Zombie waves during the hack are optional. If the server restarts mid-hack it picks up where it left off.

Loot is built from pools and presets across three config files, which is where most of the setup effort goes. The free config builder on this site handles all three together and checks every reference before it reaches your server.